Hollow concrete block.



PAiBNTED MAR. 17, 1908.

H. N.- PETTICRBW. HOLLOW CONCRETE BLOCK.

APPLICATION FILED MAY 15,1907.

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Application led. ay 15, ?('1'2".

To all whom it may cof/trein.' Be it known that I, HERBERT N. 'ParraGREW, a citizen of the United States, residing at. New Orleans, in theparish of OrleansV andStateof Louisiana, have invented a new and usefulHollow Concrete Block, of which the following is a speciiication.

This invention relates to walls and blocks used in constructing thesame.

The object of the invention is to rovide a 'wall' having intersectingvertical y and horizontally disposed chambers or flues thereby .topermit' the Vfree circulation of air through the wall and thus preventdampness or moisture from penetrating the outer face of the wall\andwetting 4or otherwise in-l juring the plaster.

A further object is to provide an artiiicial stone building blocklformed in a plurality Acluding aralle of sections so as to permit thesame to be convenientlymanipulated.

Ay further ob'ect .is to provide a block inl side walls spaced apart byinterme iate web blocks, the latter being rovided with bonding membersadapted to bearagainst the upper longitudinal edges of the side memberswhen the blocks are laid into a wall.

A. still further object of the invention is to generally. improve thisclass of devices so as to increase their utility, durability and`-e'liciency- Further objects and advantages will ap.

pear in the following description, it being understood that various'changes in form, proportionsand minor details of constructionmay beresorted .to within the scope of the appended claims.

In the accompanying drawings forming a `part of this specification:Figure l is a side elevation cfa portion of a wall constructed inaccordance with my invention. i Fig. 2 is a top plan view of the same.Fig. 3 is a transverse sectional view taken on the line 3--3`of Fig 2.Fig. 4 lis a similar view taken on the line 4 4 of Fig. 2. transversesectional view illustrating a modified form of the invention. Fig. 6 isa vertical sectional view illustrating a modified form of buildingblock.`

' Similar numerals of reference indicate cor- .responding parts in allof the figures of the drawings.

The improved block `forming the subject matter of the present inventionis preferably rectangular in shape, as shown, Aand formed Specificationer? Lettera 'ihftent Fig. 5 is a atented March 17, 1908.

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of cement, concrete or other plastic materiai, said block beingpreferably formed in sections so as to facilitate handling the same whenlayingthe blocks into a wall.

The side sections 5 and 6 are provided vwith terminal and intermediateinwardly extending lugs or projections 7 and 8 Vreierably extending theentire height of the lock and disposed in horizontal alinement, asshown. The side members 5 and 6 are spaced apart by intermediate webblocks 9 which latter are approximately one-half'the height of the sidemembers 5 and 6 and bear against the terminal and. intermediateprojections of the side members thereby to form a plurality ofvertically disposed air chambers or ihres By making the web blocksapproximately one-half the height of the side sections 5 and '6 theadjacent edges of the web blocks are spaced apart so as to form aplurality of 'horizontally disposed air iiues 11 which intersect thevertical air [lues 10 and thereby permit the free circulation of airboth ver-l tically and horizontally of the wall.

Molded or otherwise embedded in the web blocks 9 are metal strips orbonding'members .12, the op iosite ends o'i" which roject laterallybeyonc the adjacent verticrl edges of the web blocks and are 4zulaptedto bear against the upper longitudinal edges of the side members 5 and 6thereby to support the web bloc`ls-in position and assist in reinforcingand strengthening the wall.

ln erecting the wall the blocks are laid in superposed courses and'arranged to break joint with the vertical edges oi' the side members orblocks in one course bearing against the vertical edges 4of adjacentblocks in the same course and with the web blocks 9 interosed betweenthe side members at the pro# jections 7 and S ol the latter.

Attention is here called to the fact that the upper ends of the webblocks in one course project vertically above the upper longitudinaledges of' the side members in the same course so as to form stops fortheA ide members of the blocks in a succeeding course and thus permitthe same to be horizontally alined in the wall.

The outer sections of the corner blocks 13 are preferably reinforced at14 While the inner members 15 of the corner blocks are 'provided withangular extensions 16 which bear against the inner sections of theadjacent side blocks, as shown. l

The corner blocks 13 'are also preferably reinforced and .strengthenedby the provision of Web blocks 13 similarv in construction t0 the Webblocks 9, saidcorner Webs being provided with metal strips or bondingmembers the opposite ends of which extend i diagonally across thecorners of the Wall,v as

shownin Fig. 2 of. the drawings.

In Fig. 5 of lthe' drawings there is illustrated a modified form oftlieinventionlin Which the Web ,blocks 9 are approximately *the sameheight as the side members 5" and 6 so that-When the blocks are laidinto a 'Wall the adjacent ends of said blocks will abut and thus form acontinuous air flue throughut the entire height of the tvali.

A further" modification is illustrated in Fig. 6 of the drawingsinvWhich the upper longitudinal edges of the-side'members of the blocksare extended vlaterally-to form projecting iianges 17 for engagementwith the corres ending fianges of' an adjacent block,

in imitation of cut, chipped or natural face rook. i

it Will also be understood thatthe inner` faces lof the side'sections ofthe blocks may be made of relatively coarse material While the outeror-exposed faces of the blocks seams Having thus described the inventionwhat is claimed is: I y

A Wall formed' ofI a plurality side and corner blocks laid in superposedcourses and arranged to break joint,` said side blocks each consistingof separable parallel sideme-mbers having theirinner faces provided Withterminal intermediate 'projections of equal Width and extending theentire heightof the blocks, transverse web blocks interposed between theside members and having their longitudinal edges bearing againstf theadjacent projections of the side members and their upper ends projectedabove saidv side members, bonding members vembedded in the web blocksandhaving their opposite ends extended laterally beyond'the adjacentends of the web blocks foren'gagement with the longitudinal edges of theadjacent side members at the projections thereof, angular extensionsformed on the corner blocks, and

diagonally disposed Web bloeks having simi-ff lar bonding membersadapted to 'bear 'against' the angular extensionsofthe corner blocks,

said 'web blocks being independent 0f the side members 'and cornerblocks.

1n testimony that i claim the foregoing as my own, l have hereto affixedmy signature in the presence of twoivitnesses.

HERBERT N. ETTIGREJV. Witnesses C. i7'. EDWARDS,

W. F. Waisr-aurr, Jr.

